LiCoPO4 - 3D carbon nanofiber composites as possible cathode materials for high voltage applications

L. Dimesso, C. Spanheimer, W. Jaegermann, Y. Zhang, Alexander Yarin

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27 Citations (Scopus)

Abstract

Electrospun and carbonized 3D nanofiber mats coated with olivine structured lithium cobalt phosphate (LiCoPO4) were formed by a Pechini-assisted sol-gel process as cathode material for lithium ion batteries. 3D nonwoven nanofibers were soaked in aqueous solution containing lithium, cobalt salts and phosphates at 80 °C for 2 h. Then, the composites were dried and annealed at 730 °C for 2 to 12 h in nitrogen atmosphere. Crystalline deposits were uniformly distributed on the carbon nanofiber surface. The "loading" of the cathode material on the 3D carbon nanofiber composites reached 300 wt%. The electrochemical measurements revealed the discharge specific capacity (measured at a discharge rate of 0.1 C and room temperature) reaching a maximum value of 46 mAh g-1 after annealing time t = 5 h.

Original languageEnglish
Pages (from-to)38-42
Number of pages5
JournalElectrochimica Acta
Volume95
DOIs
Publication statusPublished - 2013 Apr 15
Externally publishedYes

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Keywords

  • Cathode material
  • Composite
  • Lithium cobalt phosphate
  • Lithium ion battery
  • Nonwoven carbon nanofibers

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

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